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Lipids and proteolipids in membranes of the smooth endoplasmic reticulum of rat enterocytes. Vitamin D-dependent calcium binding |
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| Authors: | R P Morozova V A Kokunin I A Nikolenko N V Kanivets M V Stefanov |
| Abstract: | The lipid and proteolipid composition of endoplasmic reticulum smooth membranes from rat enterocytes in normalcy and under D-hypovitaminosis is studied to show the Ca2+-binding with these components. These membranes in vitamin D-deficiency are established to differ in the cholesterol content. Proteolipids 1 and 2 are isolated from the lipid fraction of membranes. Their amino acid composition is determined. The vitamin D-dependent binding of Ca by the proteolipid fraction is shown. |
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